/* -*- c++ -*-
    Copyright (C) 2006 Vladimir Shabanov <vshabanoff@gmail.com>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
#ifndef __OSGCAL__HARDWAREMESH_H__
#define __OSGCAL__HARDWAREMESH_H__

#include <osgCal/Mesh>

namespace osgCal
{
    class HardwareMesh : public Mesh
    {
        public:
           
            osg::Object* cloneType() const;
            osg::Object* clone( const osg::CopyOp& ) const;
            virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const HardwareMesh *>(obj)!=NULL; }
            virtual const char* libraryName() const { return "osgCal"; }
            virtual const char* className() const { return "HardwareMesh"; }

            HardwareMesh( ModelData*      modelData,
                          const CoreMesh* mesh );


            virtual void drawImplementation( osg::RenderInfo& renderInfo ) const;
            /**
             * Real draw implementation called from HardwareMesh & MeshDepth.
             * They differ in only in state sets so pass it explicitly.
             */
            void drawImplementation( osg::RenderInfo&     renderInfo,
                                     const osg::StateSet* stateSet) const;

            virtual void compileGLObjects(osg::RenderInfo& renderInfo) const;

            virtual void update();

            /**
             * For compiling all statesets when Model accepts osgUtil::GLObjectsVisitor.
             */
            virtual void accept( osgUtil::GLObjectsVisitor* glv );

        private:

            // TODO: merge MeshDepth & HardwareMesh into one
            // class and move all shared part into other structure.
            
            /**
             * Draw implementation part which resides in the display
             * list.
             * It performs all the drawing related calls except
             * rotation/translation uniforms setup (which is mesh dependent).
             */
            void innerDrawImplementation( osg::RenderInfo& renderInfo,
                                          GLuint           displayList = 0 ) const;

            virtual void onParametersChanged( const MeshParameters* previousDs );
    };

}; //namespace osgCal

#endif
